Ore-crusher



(No Model,)

W. s. SHARPNEOK.

ORE GRUSHER.

No. 279,983. Patented June 2 1883 UNITED STATES PATENT OFFICE.

WILLIAM S. SHARPNEOK, OF DENVER, COLORADO, ASSIGNOR OF 'IWYO- THIRDS TOH. N. NICHOLS, OF NORTH PLATTE, NEBRASKA.

ORE-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 279,983, dated June 26,1883.

Application filed January 29, 1883. (No model.) i

To all whom it may concern .f

nation, construction, and arrangement of parts,

as hereinafter more particularly described, and then pointed out in theclaims.

' In the accompanying drawings, Figure 1 shows a side elevation of amachine constructed according to my improvement, with part representedas broken away; Fig. 2, an end view of the same, and Fig. 3 amodification in outline.

In the form of my machine here shown, A represents a casting forming themortar of the machine, having openings (1 a a in the sides filled inwith wire-gauze, and an opening, a, in the top, through which thematerial may be fed.

B is a three-armed lever, preferably keyed fast on the shaft 0, workingin the bearings D, and having on its two lower arms, 5 b, the stamps bb, which, with the shaft 0, receive a rocking or oscillating motion inthe bearings D by means of the arm b5, which'is connected by a pivotaljoint to the piston-rod E of the oscillating cylinder F, supported ontrunnions G H in the forked standard I, rising from the bed-plate'K,which also supports the mortar A.

At L is a steam chest, into whichsteam passes through the trunnion G,which is connected with the steam'pipe by a suitable stufling-box, fromwhence it passes into the cylinder, in the usual manner, through themedium of a common D- valve, M, and after giving motion to the piston inthe cylinder F passes out through the exhaust-port to the trunnion H,which is connected with the exhaust-pipe by a stuffingbox. I The valveis operated by means of an eccentric, N, on the shaft 0, which hasbearings in the sides of the steam-chest, and is provided with abelt-pulley, I through which motion may be communicated to the valve 5from any convenient moving power.

At the bottom of the mortar is a die, R, cast with a base, '0, andseparate from themortar, and is placed loosely therein, so that it maybe easily renewed when worn.

In operation the belt-pulley P, and consequently the valve M, is drivenby the belt at the desired rate of speed, and then by means ofathrottle-valve in the steam-pipe, connected with the trunnion G, aproper quantity of steam is admitted and the piston kept in motion, inthe usual manner, by which means the threearmed lever B is given anoscillating motion, and the stamps b b are caused to rapidly approachand recede from the die R, thus giving a series of p owerful blows uponthe rock, which is fed in through the opening a, with whatever water isnecessary, and is rapidly crushed between the faces of the stamps andthe sides of the die. As the stamps recede the crushed rock falls down,and at the next blow of the stamp a part of the crushed rock is actedupon again by the face of the stamp, and another part is acted upon bythe side of the stamp, which thus gives a grinding or rubbing blow uponthat portion of the rock between the side of the stamp b and the base '0of the die. To increase this effect I sometimes propose to cast a seriesof steps or ribs on the base of the die,

or on the side of the stamp, or on both base of 80 die and side ofstamp, as shown on the lefthand side of Fig. 1.

'It will be observed that the ore is placed in the mortar and held bythe fixed base until pulverized to the desired fineness by thesuccessive blows of the faces of the stamps against the sides of the dieand the rubbing of the sides of the stamps over the base. By connectingthe stamps with an oscillating engine the inction of one compensates forthat of the other, and thus no connecting-rod is required between thepiston and the three-armed lever.

By this construction is obtained a rapidly working crusher that willtakecomparatix ely little power to run, as the two opposite stamps balanceeach other, and one that willnotbe likely to get out of order.

engine shown, as other forms of oscillating engines may be used withvery gogd effect; nor do I intend to limit myself to the exactconstruction and arrangement of the three-armed lever, as it might bevaried in many ways without departing from the spirit of my invention.For instance, instead of making the threearmed lever in one piece, thearm I) may be cast separately and attached on the outside of the mortarto the shaft G, which of course would have to be made long enough forthis purpose. Instead of making both stamps work against opposite sidesof the same die, I intend in some cases to arrange the stamps so thateach one will strike upon the top of a separate die, as shown in theoutline, Fig. v3. I do not regard, however, these plans as good as thatshown in the main figure of the drawings. In some instances I propose todispense with the vertical standard I by mounting an arm or arms 011 thetop of the mortar and extending in the position now occupied by saidstandard I, to form a substitute for it.

Any novel feature not here claimed I reserve the right to make the subjcot-matter of a separate application.

What I claim as new is- 1. In a rock-crusher, the combination of a pairof stamps constructed to give crushing.

blows against the opposite sides of the die on a fixed bed supportingthe material with said die, a fixed base, and means for operating thestamps, substantially as described.

2. In a rock-crusher, the combination of a pair of stamps constructed togive crushing blows alternately upon the opposite sides of the die, withsaid die, a fixed base supporting the material, and means for operatingthe stamps, substantially as described.

3. In a rock-crusher, the combination, with a fixed bed adapted tosupport the ore, and a die, of a stamp constructed to swing over andgradually approach said bed as the blow is given against the side of thedie, substantially as described.

4. In a rock-crusher, the combination, with a fixed bed adapted tosupport the ore, and a central die, of a pair of stamps constructed toswing on a fixed bearing above the central die and to gradually approachthe bed as the blows are given against the sides of the die,substantially as described.

5. The combination, in a rock-crusher, of two stamps rigidly connectedto move together and oscillate on the same bearing, with a suitable die,and a stationary base supporting the material, substantially asdescribed.

6. In a-rock-crusher, the combination, with the piston-rod of anoscillating engine, of an oscillating stamp carrying lever connecteddirectly to said piston-rod, whereby the movement of one compensates forthat of the other, substantially as described.

7 In a rock-crusher, the combination, with the piston-rod of anoscillating engine, of a three-armed lever working on a central fulcrum,'and having two of its arms carrying stamps and the third connecteddirectly to' said piston-rod, whereby the movement of one compensatesfor that of the other, substantially as described.

In testimony whereofI affix my signature, in presence of two witnesses,this 22d day January, 1883.

WILLIAM S. SHARPNEOK.

\Vitnesses:

XV. H. KINGSBERY, T. ,0. EARLY.

